resistor

简明释义

英[rɪˈzɪstə(r)]美[rɪˈzɪstər]

n. [电] 电阻器

复 数 r e s i s t o r s

英英释义

单词用法

同义词

反义词

例句

1.The resistor, which is in series with the capacitor, is an important component in this test system.

在这个测试系统中，与电容器相串联的电阻器是一个重要的元件。

2.A voltage controlled linear resistor which consists of only two field-effect transistors (FET) is presented.

本文提出了一种用两个场效应管实现的压控线性电阻电路。

3.Fixed resistor used more in the electronic field.

在电子产品中，以固定电阻应用最多。

4.Circuit designers usually compensate for this by including a resistor known as a "tempco" in the circuit.

电路设计者通常会在电路中加入一个名为“温度系数(tempco)”的电阻器来进行补偿。

5.The resistor limits the current in case the capacitor becomes shorted.

在电容器短路的情况下，电阻器限制电流的大小。

6.This load is easier for power supply to start up than resistor load.

这种负载对开关电源来说要比电阻负载容易启动。

7.Some of the students are welding capacitor; the others resistor.

学生中的一些人在焊接电容，另一些人在焊接电阻。

8.To minimize noise and leakage resistance, the resistor should be placed in a shielded, guarded test fixture.

为了尽量降低噪声和泄漏电阻的影响，应当将电阻器放在一个屏蔽、保护的测试夹具中。

9.In this circuit, the resistor helps prevent overheating.

在这个电路中，电阻器有助于防止过热。

10.We used a resistor to limit the voltage going to the LED.

我们使用了一个电阻器来限制LED的电压。

11.A faulty resistor can cause the entire circuit to fail.

一个故障的电阻器可能会导致整个电路失效。

12.The resistor is essential for controlling the current in an electronic circuit.

在电子电路中，电阻器对于控制电流是必不可少的。

13.You need to choose the right value of resistor for your project.

你需要为你的项目选择合适的电阻器值。

作文

In the world of electronics, understanding components is crucial for anyone looking to create or repair devices. One of the fundamental components that every electronics enthusiast should be familiar with is the resistor. A resistor (电阻器) is a passive electrical component that limits or regulates the flow of electrical current in a circuit. It serves various purposes, such as protecting sensitive components from excessive current, dividing voltages, and generating heat. The basic principle behind a resistor is Ohm's Law, which states that the current flowing through a conductor between two points is directly proportional to the voltage across the two points. This relationship is expressed by the formula V = IR, where V is voltage, I is current, and R is resistance. The unit of resistance is the ohm, symbolized by the Greek letter omega (Ω). Resistors come in various types and sizes, each designed for specific applications. For instance, fixed resistors have a constant resistance value, while variable resistors, such as potentiometers, allow users to adjust the resistance as needed. There are also specialized types like thermistors, which change resistance based on temperature, and light-dependent resistors (LDRs), which vary resistance according to light intensity. When designing circuits, selecting the right resistor (电阻器) is essential. If the resistance is too high, the circuit may not function properly due to insufficient current. Conversely, if the resistance is too low, it can lead to excessive current flow, potentially damaging components. Therefore, it is important to calculate the appropriate resistance value using the specifications of other components in the circuit. Another critical aspect of resistors is their power rating, which indicates how much power they can dissipate without being damaged. Power is measured in watts, and exceeding this rating can cause a resistor (电阻器) to overheat and fail. This is why it is vital to consider both the resistance value and power rating when selecting a resistor for a project. In practical applications, resistors (电阻器) are used in various ways. For example, they are commonly found in voltage divider circuits, where they split voltage into smaller parts. They are also used in pull-up or pull-down configurations to ensure that inputs to logic gates are at a defined level. Furthermore, resistors play a significant role in filtering signals and controlling the timing in circuits. In conclusion, the resistor (电阻器) is an indispensable component in the field of electronics. Its ability to control current flow makes it vital for the proper functioning of circuits. By understanding the various types, functions, and calculations associated with resistors, one can gain a deeper appreciation for their role in electronic devices. Whether you are a hobbyist or a professional, mastering the use of resistors (电阻器) will undoubtedly enhance your skills and knowledge in electronics.

在电子世界中，理解组件对于任何想要创建或修复设备的人来说都是至关重要的。每个电子爱好者都应该熟悉的基本组件之一是电阻器。电阻器（resistor）是一种被动电子组件，用于限制或调节电路中的电流流动。它有多种用途，例如保护敏感组件免受过大电流的影响、分压和产生热量。电阻器的基本原理是欧姆定律，该定律指出，在两个点之间导体中流动的电流与这两个点之间的电压成正比。这一关系用公式V = IR表示，其中V是电压，I是电流，R是电阻。电阻的单位是欧姆，由希腊字母Ω表示。电阻器有各种类型和尺寸，每种类型都设计用于特定应用。例如，固定电阻器具有恒定的电阻值，而可变电阻器，如电位器，允许用户根据需要调整电阻。还有一些特殊类型，如热敏电阻，它们根据温度变化电阻，以及光敏电阻（LDR），其电阻根据光强度变化。在设计电路时，选择合适的电阻器（resistor）至关重要。如果电阻过高，电路可能由于电流不足而无法正常工作。相反，如果电阻过低，则可能导致过大的电流流动，从而可能损坏组件。因此，使用电路中其他组件的规格计算适当的电阻值非常重要。电阻器的另一个关键方面是它们的功率额定值，指示它们在不损坏的情况下可以散发多少功率。功率以瓦特为单位测量，超过此额定值可能导致电阻器（resistor）过热并失效。这就是为什么在选择项目的电阻器时，考虑电阻值和功率额定值都至关重要。在实际应用中，电阻器（resistor）有多种用途。例如，它们通常出现在分压电路中，分割电压为较小的部分。它们还用于上拉或下拉配置，以确保逻辑门的输入处于定义的水平。此外，电阻器在过滤信号和控制电路中的定时方面也发挥着重要作用。总之，电阻器（resistor）是电子领域中不可或缺的组件。它控制电流流动的能力使其对电路的正常运行至关重要。通过了解与电阻器相关的各种类型、功能和计算，人们可以更深入地欣赏它们在电子设备中的作用。无论你是业余爱好者还是专业人士，掌握电阻器（resistor）的使用无疑会增强你在电子学中的技能和知识。